Non-Mineral Lease (Tables)	12 Months Ended
Non-Mineral Lease (Tables)	Dec. 31, 2021
Non-Mineral Leases [Abstract]
Right-of-Use Assets and Lease Liabilities	Millions of Dollars 2021 2020 Operating Leases Finance Leases Operating Leases Finance Leases Right-of-Use Assets Properties, plants and equipment Gross $ 1,812 1,375 Accumulated DD&A (857) (721) Net PP&E * 955 654 Prepaid expenses and other current assets $ 16 2 Other assets 649 783 Lease Liabilities Short-term debt $ 280 168 Other accruals 188 226 Long-term debt * 981 723 Other liabilities and deferred credits 479 559 Total lease liabilities $ 667 1,261 785 891 * Includes proportionately consolidated finance lease assets of $ 208 million at December 31, 2021 and $ 258 million at December 31, 2020. Includes proportionately consolidated finance lease liabilities of $ 154 million at December 31, 2021 and $ 97 million at December 31, 2020. * Includes proportionately consolidated finance lease liabilities of $ 462 million at December 31, 2021 and $ 522 million at December 31, 2020.
Lease Cost	The following table summarizes our lease costs: Millions of Dollars 2021 2020 2019 Lease Cost * Operating lease cost $ 278 321 341 Finance lease cost Amortization of right-of-use assets 148 163 99 Interest on lease liabilities 27 34 37 Short-term lease cost 21 42 77 Total lease cost * $ 474 560 554 * The amounts presented in the table above have not been adjusted to reflect amounts recovered or reimbursed from oil and gas coventurers. Short-term leases are not recorded on our consolidated balance sheet. * Variable lease cost and sublease income are immaterial for the periods presented and therefore are not included in the table above
Lease Term and Discount Rate	The following table summarizes the lease terms and discount rates as of December 31: 2021 2020 Lease Term and Discount Rate Weighted-average term (years) Operating leases 5.97 6.11 Finance leases 7.49 7.12 Weighted-average discount rate (percent) Operating leases 2.66 2.78 Finance leases 3.24 4.27
Other Information	The following table summarizes other lease information: Millions of Dollars 2021 2020 2019 Other Information * Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases $ 204 232 203 Operating cash flows from finance leases 6 11 27 Financing cash flows from finance leases 73 255 81 Right-of-use assets obtained in exchange for operating lease liabilities $ 174 250 499 Right-of-use assets obtained in exchange for finance lease liabilities 447 426 26 *The amounts presented in the table above have not been adjusted to reflect amounts recovered or reimbursed from oil and gas coventurers. In addition, pursuant to other applicable accounting guidance, lease payments made in connection with preparing another asset for its intended use are reported in the "Cash Flows From Investing Activities" section of our consolidated statement of cash flows.
Maturity of Lease Liabilities	The following table summarizes future lease payments for operating and finance leases at December 31, 2021: Millions of Dollars Operating Leases Finance Leases Maturity of Lease Liabilities 2022 $ 195 341 2023 143 199 2024 114 166 2025 68 143 2026 50 139 Remaining years 159 462 Total * 729 1,450 Less: portion representing imputed interest (62) (189) Total lease liabilities $ 667 1,261 *Future lease payments for operating and finance leases commencing on or after January 1, 2019, also include payments related to non-lease components in accordance with our election to adopt the optional practical expedient not to separate lease components apart from non-lease components for accounting purposes. In addition, future payments related to operating and finance leases proportionately consolidated by the company have been included in the table on a proportionate basis consistent with our respective ownership interest in the underlying investee company or oil and gas venture.